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Kernel 2.8 crashes SCSI CD ROM on i386 - no problems with 2.6



Hello!

I just tried to install OpenBSD 2.8 from CD on an i386. I booted it from
CD ROM. During the boot process the SCSI bus was reseted (or whatever).
After that the CD ROM/writer was not accessable (mountable) any more.
The SCSI hard disc on the same SCSI bus however works as usual. I
installed OpenBSD from my other hard disc instead of the CD ROM to get
the dmesg. The CD ROM is still not accessable. 

With exactly the same hardware configuration booting OpenBSD 2.6 did
not cause any problems. Here are the dmesgs of kernel 2.8 and 2.6: 

-------------------------------------------------------------------------
2.8

OpenBSD 2.8 (GENERIC) #399: Mon Nov  6 10:59:23 MST 2000
    deraadt_(_at_)_i386_(_dot_)_openbsd_(_dot_)_org:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel Pentium II (Klamath) ("GenuineIntel" 686-class, 512KB L2 cache) 234 MHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SYS,MTRR,PGE,MCA,CMOV,MMX
real mem  = 200912896 (196204K)
avail mem = 181153792 (176908K)
using 2478 buffers containing 10149888 bytes (9912K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(8b) BIOS, date 09/09/97, BIOS32 rev. 0 @ 0xf04e0
apm0 at bios0: Power Management spec V1.2 (BIOS mgmt disabled)
apm0: AC on, battery charge unknown
pcibios0 at bios0: rev. 2.1 found at 0xf0000[0x67c]
pcibios0: PCI IRQ Routing Table rev. 1.0 found at 0xf0a90, size 144 bytes (7 entries)
pcibios0: PCI Interrupt Router at 000:04:0 ("Intel 82371FB (Triton) PCI-ISA" rev 0x00)
pcibios0: PCI bus #1 is the last bus
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443LX PCI-AGP" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82443LX AGP" rev 0x03
pci1 at ppb0 bus 1
pcib0 at pci0 dev 4 function 0 "Intel 82371AB PIIX4 ISA" rev 0x01
pciide0 at pci0 dev 4 function 1 "Intel 82371AB IDE (PIIX4)" rev 0x01: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <IBM-DTTA-351010>
wd0: can use 32-bit, PIO mode 4, DMA mode 2, Ultra-DMA mode 2
wd0: 16-sector PIO, LBA, 9671MB, 16383 cyl, 16 head, 63 sec, 19807200 sectors
pciide0: channel 0 interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data transfers)
"Intel 82371AB USB (PIIX4)" rev 0x01 at pci0 dev 4 function 2 not configured
"Intel 82371AB Power Management (PIIX4)" rev 0x01 at pci0 dev 4 function 3 not configured
ahc1 at pci0 dev 6 function 0 "Adaptec AIC-7880" rev 0x00: irq 10
ahc1: Wide Channel A, SCSI Id=7, 16/255 SCBs
scsibus0 at ahc1: 16 targets
ahc1: target 0 using 8bit transfers
ahc1: target 0 synchronous at 10.0MHz, offset = 0xf
sd0 at scsibus0 targ 0 lun 0: <IBM, DFHSS1F       !c, 4141> SCSI2 0/direct fixed
sd0: 1003MB, 4385 cyl, 4 head, 117 sec, 512 bytes/sec, 2055035 sec total
ahc1: target 3 using 8bit transfers
ahc1: board is not responding
cmd fail
probe(ahc1:3:0): SCB 0x1d - timed out in Message-in phase, SEQADDR == 0x155
probe(ahc1:3:0): BDR message in message buffer
probe(ahc1:3:0): no longer in timeout, status = 0
probe(ahc1:3:0): Unexpected busfree in Message-in phase
SEQADDR == 0x155
"Matrox MGA 1064SG 220MHz" rev 0x03 at pci0 dev 10 function 0 not configured
isa0 at pcib0
isadma0 at isa0
sb0 at isa0 port 0x220/24 irq 5 drq 1: dsp v3.01
midi0 at sb0: <SB MIDI UART>
audio0 at sb0
opl0 at sb0: model OPL3
midi1 at opl0: <SB Yamaha OPL3>
pcppi0 at isa0 port 0x61
midi2 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
vt0 at isa0 port 0x60/16 irq 1: vga 80 col, color, 8 scr, mf2-kbd
pms0 at vt0 irq 12
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask 4440 netmask 4440 ttymask 54c2
pctr: 686-class user-level performance counters enabled
mtrr: Pentium Pro MTRR support
wd0: no disk label
dkcsum: wd0 matched BIOS disk 81
dkcsum: sd0 matched BIOS disk 80
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02

----
and for comparison 2.6

OpenBSD 2.6 (GENERIC) #696: Tue Nov  2 01:46:05 MST 1999
    deraadt_(_at_)_i386_(_dot_)_openbsd_(_dot_)_org:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel Pentium II (Klamath) ("GenuineIntel" 686-class, 512KB L2 cache) 234 MHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SYS,MTRR,PGE,MCA,CMOV,MMX
BIOS mem  = 654336 conventional, 200278016 extended
real mem  = 200933376
avail mem = 183160832
using 2478 buffers containing 10149888 bytes of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(8b) BIOS, date 09/09/97
bios0: diskinfo 0xe055800c cksumlen 1 memmap 0xe05580a8 apminfo 0xe055812c
apm at bios0 function 0x15 not configured
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443LX PCI-AGP (PAC)" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82443LX AGP (PAC)" rev 0x03
pci1 at ppb0 bus 1
pcib0 at pci0 dev 4 function 0 "Intel 82371AB PIIX4 ISA" rev 0x01
pciide0 at pci0 dev 4 function 1 "Intel 82371AB IDE (PIIX4)" rev 0x01: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <IBM-DTTA-351010>
wd0: can use 32-bit, PIO mode 4, DMA mode 2, Ultra-DMA mode 2
wd0: 16-sector PIO, LBA, 9671MB, 16383 cyl, 16 head, 63 sec, 19807200 sectors
pciide0: channel 0 interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data transfers)
"Intel 82371AB USB (PIIX4)" rev 0x01 at pci0 dev 4 function 2 not configured
"Intel 82371AB Power Management (PIIX4)" rev 0x01 at pci0 dev 4 function 3 not configured
ahc1 at pci0 dev 6 function 0 "Adaptec AIC-7880" rev 0x00: irq 10
ahc1: aic7880 Wide Channel, SCSI Id=7, 16 SCBs
scsibus0 at ahc1: 16 targets
ahc1: target 0 synchronous at 10.0MHz, offset = 0xf
sd0 at scsibus0 targ 0 lun 0: <IBM, DFHSS1F       !c, 4141> SCSI2 0/direct fixed
sd0: 1003MB, 4385 cyl, 4 head, 117 sec, 512 bytes/sec, 2055035 sec total
ahc1: target 3 synchronous at 8.0MHz, offset = 0xf
cd0 at scsibus0 targ 3 lun 0: <YAMAHA, CRW4416S, 1.0f> SCSI2 5/cdrom removable
"Matrox MGA 1064SG 220MHz" rev 0x03 at pci0 dev 10 function 0 not configured
isa0 at pcib0
isadma0 at isa0
sb0 at isa0 port 0x220/24 irq 5 drq 1: dsp v3.01
midi0 at sb0: <SB MIDI UART>
audio0 at sb0
opl0 at sb0: model OPL3
midi1 at opl0: <SB Yamaha OPL3>
pcppi0 at isa0 port 0x61
midi2 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
vt0 at isa0 port 0x60/16 irq 1: generic VGA, 80 col, color, 8 scr, mf2-kbd
pms0 at vt0 irq 12
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask 4440 netmask 4440 ttymask 54c2
pctr: 686-class user-level performance counters enabled
wd0: no disk label
dkcsum: wd0 matched BIOS disk 81
dkcsum: sd0 matched BIOS disk 80
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02

Best regards,

Chris